Method and apparatus for efficiently reporting a CQI/CSI measurement report

Abstract

To solve the above-mentioned problem, a method in which a terminal reports channel state information comprises the following steps: receiving, from a base station, information on a plurality of patterns to be used in a channel state measurement; receiving, from the base station, selection information for selecting a pattern from among the plurality of patterns that is to be used in the channel state information to be reported to the base station; measuring a channel state using the information on the plurality of patterns; and selecting a portion of the measured channel state based on the selection information, and reporting the selected portion to the base station. The above-described solution enables the efficient reporting of channel state information including CQIICSI, thus improving communication efficiency.

What is claimed is: 
     
       1. A method for measuring channel state by a terminal in a wireless communication system, the method comprising:
 receiving at least two subframe sets for measuring the channel state and channel state information (CSI) report configuration via a radio resource control (RRC) signaling; 
 identifying a subframe set of the at least two subframe sets based on a first subframe; 
 measuring the channel state based on the identified subframe set; and 
 reporting the channel state in a second subframe determined based on the CSI report configuration, 
 wherein an interval between the first subframe and the second subframe is a predetermined value. 
 
     
     
       2. The method of  claim 1 , wherein the identifying of the subframe set comprises identifying which subframe set includes the first subframe. 
     
     
       3. The method of  claim 1 , wherein the predetermined value is a smallest value greater than or equal to 4, such that a subframe determined according to the predetermined value corresponds to the subframe in which channel state information-reference signal (CSI-RS) is transmitted. 
     
     
       4. The method of  claim 1 , wherein the RRC signaling includes information associated with periodic CSI reporting. 
     
     
       5. A method for receiving channel state information (CSI) by a base station in a wireless communication system, the method comprising:
 transmitting at least two subframe sets for measuring the channel state and channel state information (CSI) report configuration via a radio resource control (RRC) signaling; and 
 receiving the CSI measured based on a subframe set in a second subframe determined based on the CSI report configuration, 
 wherein the subframe set is identified of the at least two subframe sets based on a first subframe, and 
 wherein an interval between the first subframe and the second subframe is a predetermined value. 
 
     
     
       6. The method of  claim 5 , wherein the subframe set includes the first subframe. 
     
     
       7. The method of  claim 5 , wherein the predetermined value is a smallest value greater than or equal to 4, such that a subframe determined according to the predetermined value corresponds to the subframe in which channel state information-reference signal (CSI-RS) is transmitted. 
     
     
       8. The method of  claim 5 , wherein the RRC signaling includes information associated with periodic CSI reporting. 
     
     
       9. A terminal for measuring channel state in a wireless communication system, the terminal comprising:
 a transceiver configured to transmit and receive a signal; and 
 a controller configured to:
 receive at least two subframe sets for measuring the channel state and channel state information (CSI) report configuration via a radio resource control (RRC) signaling, 
 identify a subframe set of the at least two subframe sets based on a first subframe, 
 measure the channel state based on the identified subframe set, and 
 report the channel state in a second subframe determined based on the CSI report configuration, 
 
 wherein an interval between the first subframe and the second subframe is a predetermined value. 
 
     
     
       10. The terminal of  claim 9 , wherein the controller is further configured to identify which subframe set includes the first subframe. 
     
     
       11. The terminal of  claim 9 , wherein the predetermined value is a smallest value greater than or equal to 4, such that a subframe determined according to the predetermined value corresponds to the subframe in which channel state information-reference signal (CSI-RS) is transmitted. 
     
     
       12. The method of  claim 9 , wherein the RRC signaling includes information associated with periodic CSI reporting. 
     
     
       13. A base station for receiving channel state information (CSI) in a wireless communication system, the base station comprising:
 a transceiver configured to transmit and receive a signal; and 
 a controller configured to:
 transmit at least two subframe sets for measuring the channel state and channel state information (CSI) report configuration via a radio resource control (RRC) signaling, and 
 receive the CSI measured based on a subframe set in a second subframe determined based on the CSI report configuration, 
 
 wherein the subframe set is identified of the at least two subframe sets based on a first subframe, and 
 wherein an interval between the first subframe and the second subframe is a predetermined value. 
 
     
     
       14. The base station of  claim 13 , wherein the subframe set includes the first subframe. 
     
     
       15. The method of  claim 13 , wherein the predetermined value is a smallest value greater than or equal to 4, such that a subframe determined according to the predetermined value corresponds to the subframe in which channel state information-reference signal (CSI-RS) is transmitted to. 
     
     
       16. The method of  claim 13 , wherein the RRC signaling includes information associated with periodic CSI reporting.